Cummins Inc.

B3.3 Tier 4 Final Engine

The mechanical B3.3 3.3-liter engine will meet Tier 4 Final emissions standards with a particulate filter aftertreatment system developed specifically for use in equipment rated below 75 hp.

  • Aftertreatment reduces PM emissions by over 90% to a near-zero level of 0.02 g/kW-hr
  • Maintains same performance and reliability without adding engine electronics or changing the fuel system
  • 55-, 60- and 65-hp naturally aspirated ratings with 158 lb.-ft. of peak torque, and 74-hp turbocharged version with a peak torque of 178 lb.-ft. and a 22% torque rise

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